Finding the Fourth Proportional to 131,788.38, 181,868.05 and 71,359.05

Step by Step Solution

1. Step 1: Write the proportion equation
   131,788.38 : 181,868.05 = 71,359.05 : x
2. Step 2: Convert to fraction form
   131,788.38/181,868.05 = 71,359.05/x
3. Step 3: Cross multiply
   131,788.38x = 181,868.05 × 71,359.05
4. Step 4: Simplify right side
   131,788.38x = 12,977,931,273.35
5. Step 5: Solve for x
   x = 12,977,931,273.35/131,788.38
6. Step 6: Final answer
   x = 98,475.54